Evaluation of the Degree of Agreement of Four Methods for Diagnosing Diabetic Autonomic Neuropathy oleh Yu Peng, Ying-shan Liu, Ying-shan Liu, Min-yi Wu, Chu-na Chen, Chu-na Chen, Chu-qiao Li, An-qi Jiang, Chong-xin Li, Yao Wang, Ge Tian, Su-yue Pan, Ling-ling Xu, Ling-ling Xu